At present we don't init the debug UART in the generic ARM code, but instead leave it to individual machines to handle. This is not the way it is supposed to work.
Add the required init to the crt files. This ensures that the UART is available as early as possible and that the announcement appears when it should, if enabled. Signed-off-by: Simon Glass <[email protected]> --- arch/arm/lib/crt0.S | 4 ++++ arch/arm/lib/crt0_64.S | 4 ++++ 2 files changed, 8 insertions(+) diff --git a/arch/arm/lib/crt0.S b/arch/arm/lib/crt0.S index 956d258c9da..ba312901f33 100644 --- a/arch/arm/lib/crt0.S +++ b/arch/arm/lib/crt0.S @@ -109,6 +109,10 @@ ENTRY(_main) mov r9, r0 bl board_init_f_init_reserve +#if defined(CONFIG_DEBUG_UART) && CONFIG_IS_ENABLED(SERIAL) + bl debug_uart_init +#endif + #if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_EARLY_BSS) CLEAR_BSS #endif diff --git a/arch/arm/lib/crt0_64.S b/arch/arm/lib/crt0_64.S index 680e674fa33..611affb74ce 100644 --- a/arch/arm/lib/crt0_64.S +++ b/arch/arm/lib/crt0_64.S @@ -91,6 +91,10 @@ ENTRY(_main) mov x18, x0 bl board_init_f_init_reserve +#if defined(CONFIG_DEBUG_UART) && CONFIG_IS_ENABLED(SERIAL) + bl debug_uart_init +#endif + mov x0, #0 bl board_init_f -- 2.33.1.1089.g2158813163f-goog
